TWI272385B - Gas identification system - Google Patents
Gas identification system Download PDFInfo
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- TWI272385B TWI272385B TW088115659A TW88115659A TWI272385B TW I272385 B TWI272385 B TW I272385B TW 088115659 A TW088115659 A TW 088115659A TW 88115659 A TW88115659 A TW 88115659A TW I272385 B TWI272385 B TW I272385B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/02—Analysing fluids
- G01N29/036—Analysing fluids by measuring frequency or resonance of acoustic waves
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/22—Details, e.g. general constructional or apparatus details
- G01N29/222—Constructional or flow details for analysing fluids
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/02—Analysing fluids
- G01N29/024—Analysing fluids by measuring propagation velocity or propagation time of acoustic waves
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/22—Details, e.g. general constructional or apparatus details
- G01N29/32—Arrangements for suppressing undesired influences, e.g. temperature or pressure variations, compensating for signal noise
- G01N29/326—Arrangements for suppressing undesired influences, e.g. temperature or pressure variations, compensating for signal noise compensating for temperature variations
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/01—Indexing codes associated with the measuring variable
- G01N2291/011—Velocity or travel time
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/021—Gases
- G01N2291/0215—Mixtures of three or more gases, e.g. air
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/028—Material parameters
- G01N2291/02836—Flow rate, liquid level
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/028—Material parameters
- G01N2291/02881—Temperature
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/10—Number of transducers
- G01N2291/102—Number of transducers one emitter, one receiver
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Abstract
Description
1272385 五、發明說明（1) [發明之領域] 本發明與一種判別流經流路之氣體種類並自動設定適合 其氣體種類條件之種類判別系統有關。 [發明之背景] 已知先前之流量測量裝置有利氣體音速以診斷流量計故 障之方法。此種方法記載於例如日本特開平8-3 G41 35號公 報。 第1圖表示特開平8-30 4 1 3 5號公報記載之流量測量裝置 構造。 如第1圖所示、流量測量裝置包含：超音波測量部1、音 速計算部2、音速設定部3、溫度測量定部4、音速計算部5 及比較部6。 第1圖所舉例係以預知超音波測量部1測量之氣體種類為 前提。 音速計算部2，依超音波測量部1輸出之訊號計算音速。 經音速計算部2計算之音速輸出於比較部6。音速計算部5 依溫度測量定部4輸出之溫度訊號，將預先設定在音速設 定部3之音速予以溫度核對。經音速計算部5予以溫度核對 之音速輸出於比較部6。比較部6比較音速計算部2輸出之 音速與音速計算部5輸出之音速。依比較部6之比較結果診 斷超音波測量部1是否故障。 如此、先前之系統，在已知氣體種類之前提下診斷流量 測量裝置是否故障。先前之系統，並不判別氣體種類。 又、先前之系統，並不依氣體種類設定條件。1272385 V. DESCRIPTION OF THE INVENTION (1) [Field of the Invention] The present invention relates to a type discrimination system for discriminating a type of gas flowing through a flow path and automatically setting a condition suitable for the gas type. [Background of the Invention] A prior art flow measuring device is known to facilitate a gas sound velocity to diagnose a flowmeter failure. Such a method is described, for example, in Japanese Laid-Open Patent Publication No. Hei 8-3 G41 35. Fig. 1 is a view showing the structure of a flow rate measuring device described in Japanese Laid-Open Patent Publication No. Hei 8-30 4 1 3 5 . As shown in Fig. 1, the flow rate measuring device includes an ultrasonic measuring unit 1, a sound calculating unit 2, a sound speed setting unit 3, a temperature measuring unit 4, a sound speed calculating unit 5, and a comparing unit 6. The example illustrated in Fig. 1 is based on the premise that the type of gas measured by the ultrasonic measuring unit 1 is predicted. The sound speed calculating unit 2 calculates the sound speed based on the signal output from the ultrasonic measuring unit 1. The sound speed calculated by the sound speed calculation unit 2 is output to the comparison unit 6. The sound velocity calculating unit 5 performs temperature matching on the sound velocity set in advance in the sound velocity setting unit 3 in accordance with the temperature signal output from the temperature measuring unit 4. The sound velocity calculated by the sound velocity calculation unit 5 is output to the comparison unit 6. The comparing unit 6 compares the sound speed output from the sound speed calculating unit 2 with the sound speed output from the sound speed calculating unit 5. Based on the comparison result of the comparison unit 6, it is diagnosed whether or not the ultrasonic measuring unit 1 is malfunctioning. In such a prior system, it is assumed that the diagnostic flow measuring device is malfunctioning before the gas type is known. Previous systems did not discriminate between gas types. Also, the previous system does not set conditions depending on the type of gas.
1272385 五、發明說明（2) 本發明之目的在提供能判別流經流路之氣體種類，自動 設定適合其氣體種類條件之氣體種類判別系統。 發明之概述： 本發明之氣體種類判別系統，包含：流路；超音波測量 部，配置在前述流路並含一對超音波振動器；音速計算 部，依來自前述超音波振動器之訊號算.出流經前述流路之 氣體音速；音速記憶部，預先記憶一定音速；及比較部， 比較由前述音速計算部算出之前述音速與預先記憶在前述 音速記憶部之前述一定音速，由此可達成上述目的。 前述氣體種類判別系統，亦可更包含：流量校正係數設 定部，依前述比較部之比較結果設定流量校正係數；及 流量計算部，依來自前述超音波測量部之前述訊號與前述 流量校正係數算出流經前述流路之前述氣體流量。 前述氣體種類判別系統，亦可更包含：開關閥，配置在 前述流路；及控制部，依前述比較部之比較結果控制前述 開關閥。 前述氣體種類判別系統，亦可更包含：開關閥，配置在 前述流路；安全基準設定部，依前述比較部之比較結果設 定安全基準；判定部，判定是否滿足前述安全基準；及 控制部，依前述判定部之判定結果控制前述開關閥。 本發明之其他氣體洩漏檢測系統，包含：流路；溫度測 量部，配置在前述流路；溫度計算部，依來自前述溫度測 量部之訊號算出流經前述流路之氣體溫度；超音波測量 部，配置在前述流路並含一對超音波振動器；音速計算1272385 V. DESCRIPTION OF THE INVENTION (2) An object of the present invention is to provide a gas type discrimination system capable of discriminating a gas type flowing through a flow path and automatically setting a gas type condition suitable for the gas. SUMMARY OF THE INVENTION The gas type discriminating system of the present invention includes: a flow path; an ultrasonic measuring unit disposed in the flow path and including a pair of ultrasonic vibrators; and a sound velocity calculating unit based on a signal from the ultrasonic vibrator a sound velocity of the gas flowing through the flow path; a sound speed memory unit that stores a predetermined sound speed in advance; and a comparison unit that compares the sound speed calculated by the sound speed calculation unit with the constant sound speed previously stored in the sound speed memory unit, thereby Achieve the above objectives. The gas type determination system may further include: a flow rate correction coefficient setting unit that sets a flow rate correction coefficient according to a comparison result of the comparison unit; and a flow rate calculation unit that calculates the flow rate correction coefficient based on the signal from the ultrasonic measurement unit The aforementioned gas flow rate through the aforementioned flow path. The gas type discriminating system may further include: an on-off valve disposed in the flow path; and a control unit that controls the on-off valve according to a comparison result of the comparison unit. The gas type discriminating system may further include: an on-off valve disposed in the flow path; a safety reference setting unit that sets a safety standard based on a comparison result of the comparison unit; a determination unit that determines whether the safety criterion is satisfied; and a control unit The on-off valve is controlled in accordance with the determination result of the determination unit. Another gas leakage detecting system according to the present invention includes: a flow path; a temperature measuring unit disposed in the flow path; and a temperature calculating unit that calculates a gas temperature flowing through the flow path based on a signal from the temperature measuring unit; and an ultrasonic measuring unit , configured in the aforementioned flow path and including a pair of ultrasonic vibrators; sound speed calculation
1272385 五、發明說明（3) 部，依來自前述超音波測量部之訊號算出流經前述流路之 前述氣體音速；溫度•音速記憶部，預先記憶一定溫度與 一定音速；及比較部，比較由前述溫度計算部算出之前述 溫度與預先記憶在前述溫度•音速記憶部之前述一定溫 度，並比較由前述音速計算部算出之前述音速與預先記憶 在前述溫度•音速記憶部之前述一定音速，由此可達成上 述目的。 前述氣體種類判別系統，亦可更包含：流量校正係數設 定部，依前述比較部之比較結果設定流量校正係數；及 流量計算部，依來自前述超音波測量部之前述訊號與前述 流量校正係數算出流經前述流路之前述氣體流量。 前述氣體種類判別系統，亦可更包含：開關閥，配置在 前述流路；及控制部，依前述比較部之比較結果控制前述 開關閥。 前述氣體種類判別系統，亦可更包含：開關閥，配置在 前述流路；安全基準設定部，依前述比較部之比較結果設 定安全基準；判定部，判定是否滿足前述安全基準；及 控制部，依前述判定部之判定結杲控制前述開關閥。 本發明之其他氣體洩漏檢測系統，包含：流路；溫度測 量部，配置在前述流路；溫度計算部，依來自前述溫度測 量部之訊號算出流經前述流路之氣體之第1溫度及第2溫 度；超音波測量部，配置在前述流路並含一對超音波振動 器；音速計算部，依來自前述超音波測量部之訊號算出流 經前述流路之前述氣體之第1音速及第2音速；溫度•音速1272385 V. The invention (3) calculates the sound velocity of the gas flowing through the flow path according to the signal from the ultrasonic measuring unit; the temperature/sonic memory unit pre-memorizes a certain temperature and a certain sound speed; and the comparison unit compares The temperature calculated by the temperature calculating unit and the constant temperature stored in the temperature/sonic memory unit in advance are compared with the sound speed calculated by the sound speed calculating unit and the constant sound speed stored in the temperature/sonic memory unit in advance. This can achieve the above objectives. The gas type determination system may further include: a flow rate correction coefficient setting unit that sets a flow rate correction coefficient according to a comparison result of the comparison unit; and a flow rate calculation unit that calculates the flow rate correction coefficient based on the signal from the ultrasonic measurement unit The aforementioned gas flow rate through the aforementioned flow path. The gas type discriminating system may further include: an on-off valve disposed in the flow path; and a control unit that controls the on-off valve according to a comparison result of the comparison unit. The gas type discriminating system may further include: an on-off valve disposed in the flow path; a safety reference setting unit that sets a safety standard based on a comparison result of the comparison unit; a determination unit that determines whether the safety criterion is satisfied; and a control unit The on-off valve is controlled in accordance with the determination of the determination unit. The other gas leakage detecting system of the present invention includes: a flow path; a temperature measuring unit disposed in the flow path; and a temperature calculating unit that calculates a first temperature and a first gas of the gas flowing through the flow path based on a signal from the temperature measuring unit a temperature; an ultrasonic measuring unit is disposed in the flow path and includes a pair of ultrasonic vibrators; and the sound velocity calculating unit calculates a first sound velocity and a first sound of the gas flowing through the flow path based on a signal from the ultrasonic measuring unit 2 sonic speed; temperature • sonic speed
1272385 、發明說明（4) §己憶部’預先記憶一定溫度與一定音速；及比較部，比較 由前述溫度計算部算出之前述第1溫度及第2溫度與預先記 憶在W述溫度•音迷記憶部之前述一定溫度，並比較由前 2音速計算部算出之前述第1音速及第2音速與預先記憶在 鈉述/HZL度·音速記憶部之前述一定音速，由此可達成上述 目的0 —刚述氣體種類判別系統，亦可更包含：流量校正係數設 定部，依前述比較部之比較結果設定流量校正係數；及 流！"計算部，，來自前述超音波測量部之前述訊號與前述 流量校正係數异出流經前述流路之前述氣體流量。 一前述氣體種類判別系統，亦可更包纟：開關閥，配置在 W述流路；及控制部，依前述比較部之比較結果控制前述 開關閥。 前述氣體種類判別系統， 前述流路；安全基準設定部 定安全基準；判定部，判定 控制部，依前述判定部之判 較佳實施例之詳細說明： 亦可2包含：開關閥，配置在 :依前述比較部之比較結果設 是否滿足前述安令美進· 定結果控制前述開關閥。 以下、參考圖說明本發明之實施形態。 (實施形態1) " 第2圖係本發明之實施形態1之氣體種 ^ 如第2圖所示、氣體種類判別系統，包人彳別系統構造。 波測量部8，配置在流路7 ;及計算部9，: ·流路7 ;超音 部8輸出之訊號 ^ ° ’計算超音波測量1272385, invention description (4) § the memory unit 'pre-memorizes a certain temperature and a certain speed of sound; and the comparison unit compares the first temperature and the second temperature calculated by the temperature calculation unit with the temperature stored in advance The predetermined temperature of the memory unit is compared with the first sound speed and the second sound speed calculated by the first two sound speed calculating unit, and the predetermined sound speed stored in the sodium/HZL degree/sonic memory unit in advance, thereby achieving the above object. - The gas type discriminating system may be further included: a flow rate correction coefficient setting unit that sets a flow rate correction coefficient according to a comparison result of the comparison unit; and a flow! " The calculation unit, wherein the signal from the ultrasonic measuring unit and the flow correction coefficient are different from the gas flow rate flowing through the flow path. Further, the gas type discriminating system may further include: an on-off valve disposed in the flow path; and a control unit that controls the on-off valve according to a comparison result of the comparison unit. In the gas type discriminating system, the flow path; the safety standard setting unit sets a safety standard; the determining unit and the determining control unit are described in detail with respect to the preferred embodiment of the determining unit: or 2: an on-off valve is disposed in: According to the comparison result of the comparison unit, it is determined whether or not the above-described on-off valve is controlled by satisfying the above-mentioned safety results. Hereinafter, embodiments of the present invention will be described with reference to the drawings. (Embodiment 1) " Fig. 2 is a gas species according to Embodiment 1 of the present invention. ^ As shown in Fig. 2, a gas type discriminating system, and a system for discriminating the system. The wave measuring unit 8 is disposed in the flow path 7 and the calculating unit 9, and: the flow path 7; the signal output from the ultrasonic unit 8 ^ ° 'calculates the ultrasonic measurement
1272385 五、發明說明（5) 計算部9，包含：音速計算部1 0、比較部1 1、音速^己情 部1 2、流量計算部1 3及流量校正係數設定部1 4。 ° & 其次、說明氣體種類判別系統之工作、作用。 音速計算部1 0，依超音波測量部8輸出之訊號計曾立 速。比較部1 1，比較由音速計算部1 〇計算之音速與"預胃先記 憶在音速記憶部1 2之音速。依比較部1 1之比較結| ^ ' 术将疋氣 體種類。由流量校正係數設定部1 4設定對應其特定氣體種 類之流量校正係數。流量計算部1 3，用流量校正係數咬定 部1 4設定之流量校正係數，依超音波測量部8輸出之訊號 計算流量。 第3圖係第2圖所示超音波測量部8之構造。 超音波測量部8，包含：一對超音波振動器丨？、1 8，爽 流路7配置，發送部1 9 ;接收部2 0 ;轉換部2 1 ;轉換控制 部2 2 ;及計時部2 3。 、工 其次、參考第3圖說明超音波測量部8之詳細情形。 首先說明測定流經流路7之氣體流量之方法。轉換部2 j 具有接頭A〜D。轉換部21之接頭A〜D連接關係之變更得由轉 換控制部22控制。 最初、轉換部21之接頭B被連接於接頭c，而轉換部21之 接頭A被連接於接頭D。此時、從發送部丨9發送之訊號經由 轉換部21之接頭C、接頭B被輸入超音波振動器I?。從超音 波振動器17輸出之超音波，橫跨流路7抵達超音波振動器 18。從超音波振動器18輸出之訊號經由轉換部21之接頭 A、接頭D由接收部20接收。1272385 V. INSTRUCTION DESCRIPTION (5) The calculation unit 9 includes a sound velocity calculation unit 10, a comparison unit 1 1 , a sound velocity unit 1 , a flow rate calculation unit 13 , and a flow rate correction coefficient setting unit 14 . ° & Next, explain the work and function of the gas type discrimination system. The sound velocity calculation unit 10 has a vertical speed based on the signal meter output from the ultrasonic wave measuring unit 8. The comparison unit 1 1 compares the speed of sound calculated by the sound velocity calculating unit 1 与 with the sound velocity recorded in the sound velocity memory unit 12 in advance. According to the comparison of the comparison part 1 1 | ^ ' surgery will be the type of gas. The flow rate correction coefficient setting unit 14 sets a flow rate correction coefficient corresponding to the specific gas type. The flow rate calculation unit 13 calculates the flow rate based on the signal output from the ultrasonic wave measuring unit 8 by the flow rate correction coefficient set by the flow rate correction coefficient nip unit 14. Fig. 3 is a view showing the structure of the ultrasonic measuring unit 8 shown in Fig. 2. The ultrasonic measuring unit 8 includes: a pair of ultrasonic vibrators? And 1, the cool flow path 7 is arranged, the transmitting unit 19; the receiving unit 20; the converting unit 2 1 ; the switching control unit 2 2 ; and the time measuring unit 23. Next, the details of the ultrasonic measuring unit 8 will be described with reference to Fig. 3. First, a method of measuring the flow rate of the gas flowing through the flow path 7 will be described. The converter 2 j has connectors A to D. The change of the connection relationship of the joints A to D of the converter unit 21 is controlled by the conversion control unit 22. Initially, the joint B of the converting portion 21 is connected to the joint c, and the joint A of the converting portion 21 is connected to the joint D. At this time, the signal transmitted from the transmitting unit 丨9 is input to the ultrasonic vibrator I? via the joint C and the joint B of the converting unit 21. The ultrasonic wave output from the ultrasonic vibrator 17 reaches the ultrasonic vibrator 18 across the flow path 7. The signal output from the ultrasonic vibrator 18 is received by the receiving unit 20 via the joint A and the joint D of the converting portion 21.
1272385 五、發明說明（6) 發送部19藉轉換部21將訊號發送給超音波振動器17，同 時將其訊號亦輸出於計時部23。接收部20從超音波振動器 Ϊ8藉轉換部21接收訊號，同時將其接收之訊號輸出於計時 部23。由計時部23測量此等訊號之時間差。因此、可得從 超音波振動器17輸出之超音波橫跨流路7抵達超音波振動 器1 8之經過時間（τ 1 )。 其次、變更轉換部21之接頭A〜D之連接關係。即、轉換 4 21之接頭A被連接於接頭c，而轉換部21之接頭b被連接 於接頭D。因此、可得從超音波振動器is輸出之超音波橫 跨流路7抵達超音波振動器1 7之經過時間（τ 2 )。 用上述測定之經過時間ΤΙ、T2，依下列演算式可算出流 經流路7之氣體流量。 匕 兹設需測定氣體流動與超音波傳播路徑P形成之角度為 0 ’超音波振動器1 7與超音波振動器18間之距離為l，氣 體音速為c。 (1) (2) 經過時間ΤΙ、T2可依式（1)及式（2)算出 T1=L/(c+v(cos θ )) T2=L/(c-v(cos Θ )) 從式（1)及式（2)消除音速c，可依式（3)算出流速v。 v=CL/2cos Θ)((1/T1)-(1/T2)) (3) 流量Q得依式（4)算出。 Q=kvs ⑷ 式（4)中、k為求平均流速用之校正係數、s為流路7之斷 面積。茲稱k為流量校正係數。1272385 V. INSTRUCTION DESCRIPTION (6) The transmitting unit 19 transmits a signal to the ultrasonic vibrator 17 by the converting unit 21, and also outputs the signal to the timing unit 23. The receiving unit 20 receives the signal from the ultrasonic vibrator 8 via the converting unit 21, and outputs the received signal to the timing unit 23. The time difference between the signals is measured by the timing unit 23. Therefore, the elapsed time (τ 1 ) of the ultrasonic wave outputted from the ultrasonic vibrator 17 to the ultrasonic vibrator 18 across the flow path 7 can be obtained. Next, the connection relationship of the joints A to D of the conversion unit 21 is changed. Namely, the joint A of the conversion 4 21 is connected to the joint c, and the joint b of the conversion portion 21 is connected to the joint D. Therefore, the elapsed time (τ 2 ) of the ultrasonic wave outputted from the ultrasonic vibrator is crossed to the ultrasonic vibrator 17 through the flow path 7 can be obtained. Using the above-described measured elapsed time ΤΙ, T2, the gas flow rate through the flow path 7 can be calculated by the following calculation formula. It is assumed that the angle between the gas flow and the ultrasonic propagation path P is 0', the distance between the ultrasonic vibrator 17 and the ultrasonic vibrator 18 is 1, and the gas sonic velocity is c. (1) (2) After the elapsed time ΤΙ, T2 can be calculated according to equations (1) and (2). T1=L/(c+v(cos θ )) T2=L/(cv(cos Θ )) 1) and (2) Eliminate the speed of sound c, and calculate the flow velocity v according to the equation (3). v=CL/2cos Θ)((1/T1)-(1/T2)) (3) The flow rate Q is calculated according to the equation (4). Q=kvs (4) In the formula (4), k is a correction coefficient for obtaining an average flow velocity, and s is a sectional area of the flow path 7. It is said that k is the flow correction coefficient.
第9頁 1272385 五、發明說明（7) 從式（丨）及式（2)消除流速v，可依式（5)算出音速0。 c=(L/2c〇s Θ )((1/T1)-(1/T2)) (5) 又、茲表示從流路7上游側將超音波發送至下游側’從 流路7下游侧將超音波發送至上游側，以逐次測量求經過 時間Τ1、Τ2之方法，惟為提高測量之精度亦得採用收發訊 時多次重覆實施之四周聲響之方法。此時、採用多數次測 量時間之平均值做為經過時間Τ1、Τ 2即可。 第4圖係由第2圖及第3圖所示計算部9實施之處理順序。 第4圖中、參考號碼24係開始命令，參考號碼25係音速 計算命令，參考號碼2 6係音速比較命令，參考號碼2 8係氣 體種類特定命令，參考號碼2 9係流量校正係數設定命令， 參考號碼3 0係流量算出命令，參考號碼3 1係間隔設定命 〇 音速計算命令25相當於音速計算部1〇(第2圖），音速比 較命令26相當於比較部1 1 (第2圖），流量校正係數設定命 令2 9相當於流量校正係數設定部1 4 (第2圖）流量算出命令 3 0相當於流量演算部1 3 (圖2 )。 如第4圖所示、依開始命令2 4開始程式。由音速計算命 令25依式（5)算出流經流路7之氣體音速。其次、由音速比 較命令2 6比較預先記憶在音速記憶部1 2之各種音速值與音 速計算命令25异出之音速值。由氣體種類特定命令28依音 速比較命令2 6之比較結果特定氣體種類。 由流量校正係數設定命令2 9設定對應特定氣體種類之流 量校正係數。用由流量算出命令30依式（3)算出之流速ν、Page 9 1272385 V. INSTRUCTIONS (7) From the equation (丨) and equation (2), the velocity v is eliminated, and the speed of sound 0 can be calculated according to equation (5). c=(L/2c〇s Θ ) ((1/T1)-(1/T2)) (5) Further, it is indicated that the ultrasonic wave is transmitted from the upstream side of the flow path 7 to the downstream side 'from the downstream side of the flow path 7 The ultrasonic wave is sent to the upstream side to measure the elapsed time Τ1 and Τ2 successively. However, in order to improve the accuracy of the measurement, it is also necessary to repeat the method of repeatedly performing the four-way sound when transmitting and receiving. At this time, the average value of the majority of measurement times is used as the elapsed time Τ1, Τ2. Fig. 4 is a processing sequence executed by the calculation unit 9 shown in Figs. 2 and 3. In Fig. 4, reference numeral 24 is a start command, reference number 25 is a sound speed calculation command, reference number 2 6 is a sound speed comparison command, reference number 2 8 is a gas type specific command, reference number 2 9 is a flow correction coefficient setting command, The reference number 30 is a flow rate calculation command, and the reference number 3 1 is an interval setting. The sound speed calculation command 25 corresponds to the sound speed calculation unit 1 (second diagram), and the sound speed comparison command 26 corresponds to the comparison unit 1 1 (second diagram). The flow rate correction coefficient setting command 2 corresponds to the flow rate correction coefficient setting unit 1 (Fig. 2). The flow rate calculation command 3 0 corresponds to the flow rate calculation unit 13 (Fig. 2). As shown in Figure 4, start the program according to the start command 2 4 . The sound velocity of the gas flowing through the flow path 7 is calculated by the sound speed calculation command 25 according to the equation (5). Next, the sound speed value which is previously recorded in the sound speed memory unit 12 and the sound speed calculation command 25 is compared by the sound speed comparison command 26. The specific gas type is determined by the gas type specific command 28 in accordance with the comparison result of the sound comparison command 26. The flow correction coefficient corresponding to the specific gas type is set by the flow correction coefficient setting command 29. The flow rate ν calculated by the flow rate calculation command 30 according to the equation (3),
第10頁 1272385 五、發明說明（8) 斷面積s與由流量校正係數設定命令29設定之流量校正係 數k依式（4)算出對應特定氣體種類之流量。 由間隔設定命令31設定之時間經過後重覆上述處理。該 處理時變更氣體種類，即算出對應其變更氣體種類之流 量 〇 ，5圖表示氣體種類與音速之關係。氣體中、依其種類 Ϊ ϊτΓ確，別音速範圍者存在。例#、第5圖所示氣體A、 =立、#及上體C，由算出音速得以明破區別。此等氣體種類 ;二皞祀此5 ,係，例⑹、得以式或表之形式保持。本實 =::::::=9音速記憶部12。 經流路7之氣體即被為5氣异體出，音速c滿足下式時，流 VI < c < V2 第6圖表示氣體種類盘冷旦 氣體種類不同時，因/其L m 正係數之關係。 流速分布形狀不同。=、 性之差異，即使同流量惟 如第6圖所+、#丄， 面積S之積求得之流量 二、、、對由測定之流速v與斷 異。 '爪里補正係數k依氣體種類而 如以上所示、因算出音速特a友 氣體種類之流量。因此、可依=虱體種类員，即可算出對應 如、因都市氣體、空氣、丙浐，體，類做各種設定。例 依上述方法判別氣體種類，^ ^之音速範圍各不同，故可 作具有此種構造之氣錶，、即二奋對應氣體種類之流量。製 氣錶。 只現不問氣體種類、通用之Page 10 1272385 V. INSTRUCTION OF THE INVENTION (8) The sectional area s and the flow rate correction coefficient k set by the flow rate correction coefficient setting command 29 calculate the flow rate corresponding to the specific gas type according to the equation (4). The above processing is repeated after the elapse of the time set by the interval setting command 31. In the process of changing the gas type, the flow rate 〇 corresponding to the type of the changed gas is calculated, and the graph 5 shows the relationship between the gas type and the speed of sound. In the gas, depending on the type of Ϊ ϊ Γ Γ, the range of the speed of sound exists. In Example # and Figure 5, the gas A, = 立, #, and upper body C are distinguished by the calculated sound velocity. The type of such gas; the second, the system, the case (6), the form or the form of the form. The real =::::::=9 sonic memory unit 12. The gas passing through the flow path 7 is divided into five gas bodies, and when the sound velocity c satisfies the following formula, the flow VI < c < V2 Fig. 6 shows that when the type of the gas type disk is different, the L m is positive The relationship between the coefficients. The flow velocity distribution is different in shape. =, the difference in sex, even if the flow rate is as shown in Fig. 6, +, #丄, the area of the area S is the flow rate obtained by the second, the pair of measured flow velocity v and the difference. 'The correction coefficient k in the claw depends on the gas type. As shown above, the flow rate of the gas type is calculated by the sound velocity. Therefore, you can calculate the correspondence according to the type of the body, such as urban gas, air, propionate, body, and various types. For example, the gas type is discriminated according to the above method, and the range of the sound velocity of the ^^ is different, so that the gas meter having such a structure can be used, that is, the flow rate of the gas type corresponding to the second. Gas meter. Only do not ask for gas types, general purpose
苐11頁 85 友、 施形態2 )苐11页 85 Friends, Shi 2)
第Y 如第7 = ί毛明，貝施形態2之氣體種類判別系統構造。 ，部8 :Ϊ在= 種類判別系統包含；流路7 ;超音波 輪出 < 訊_ . ，计异部9，計算從超音波測量部8 制開關閥ί : 1 配置在流路7 ;及控制部33，控 計算邹q 關閥32設在超音波測量部8之流路7下游。 34。里磨第2圖所示構成之要素外更含異常判斷部 如、庳！ !部34，判斷有異常氣體流經流路7否。例 法政7心机^經'瓜路7之氣體種類（例如、氣體種類A)與實際經 k路之虱體種類（例如、氣體種類B)不同時，異常判斷部 3 4判斷有異常氣體流經流路7」。應流經流路7之氣體 種類j例如、被保持在異常判斷部34。實際經流路7之氣 體種類’依比較部11之比較結果予以特定。 又、實施形態2中，與實施形態丨之構成要素相同之構成 要素附予同一參考號碼，而省略其說明。 第8圖表示由計算部9實施之處理順序。 弟8圖中、參考號碼35表示開始命令，參考號碼表示 音速计异命令’參考號碼37表不音速比較命令，參考號碼 39表示氣體種類特定命令，參考號碼40表示異常判斷命 令’參考號碼41表示間隔設定命令’參考號碼4 2表示閥關 閉命令。 茲假定原來氣體Α應流經流路7，而實際上氣體Β流經流 路7 〇 如第8圖所示、由開始命令35開始程式。由音速計算命The first Y is as follows: 7 = ί Maoming, Beishi Form 2 gas type discrimination system structure. , part 8: Ϊ = = type discriminating system included; stream 7; ultrasonic wheeling < _ _, the difference part 9, calculated from the ultrasonic measuring unit 8 switch valve ί : 1 is arranged in the flow path 7; The control unit 33 and the control unit 32 are provided downstream of the flow path 7 of the ultrasonic measuring unit 8. 34. In addition to the elements of the composition shown in Figure 2, there is an abnormality judgment unit. The unit 34 determines whether or not abnormal gas flows through the flow path 7 or not. When the gas type of the melon road 7 (for example, the gas type A) is different from the actual type of the k-way body (for example, the gas type B), the abnormality determining unit 34 determines that abnormal gas flows through Flow path 7". The gas type j to be flown through the flow path 7 is held, for example, in the abnormality determining unit 34. The gas type of the actual flow path 7 is specified by the comparison result of the comparison unit 11. In the second embodiment, the same components as those in the embodiment are denoted by the same reference numerals, and their description is omitted. Fig. 8 shows the processing procedure performed by the calculation unit 9. In the figure 8, the reference number 35 indicates a start command, the reference number indicates a sonicometer different command 'reference number 37 indicates a sound speed comparison command, the reference number 39 indicates a gas type specific command, and the reference number 40 indicates an abnormality determination command 'reference number 41 indicates The interval setting command 'reference number 4 2 indicates a valve close command. It is assumed that the original gas enthalpy should flow through the flow path 7, and in fact the gas turbulence flows through the flow path 7 〇 as shown in Fig. 8, starting from the start command 35. Calculated by sound speed
第12頁 1272385 五、發明說明（ίο) " 令36並依式（5)算出流經流路7之氣體音速。盆次、由音速 比較命令3 7比較預先記憶在音速記憶部丨2之各種音速值與 由音速計算命令36算出之音速值。由氣體種類特定命令39 依音速比較命令37之比較結果特定氣體種類。 例如、由音速計算命令36算出之音速c滿足下式時，流 經流路7之氣體被特定為氣體b。 V2 <c <V3 此時、因原來氣體A應流經流路7，而實際上氣體6流經 流路7 ’故由異常判斷命令40判斷「有異常氣體流經流路 」’實施閥關閉命令42。其結果關閉關閉閥32。 流經流路7之氣體被特定為氣體八時，由異常判斷命令4〇 判斷「有正常氣體流經流路7」^由間隔設定命令41設定 之時間經過後，重覆實施上述處理。 如以上所述、由算出音速特定氣體種類，有指定氣體以 外之氣體流動時，可瞬時遮斷氣體確保安全。 (實施形態3 ) 第9圖係本發明之實施形態3之氣體種類判別系統構造。 如第9圖所示，氣體種類判別系統包含；流路7 ;超音波 測量部8，配置在流路7 ;計算部9，計算從超音波測量部8 輸出之訊號；開關閥3 2，配置在流路7 ;及控制部3 3，控 制開關閥3 2。開關閥3 2設在超音波測量部8之流路7下游。 片异部9，除第2圖所示構成之要素外更含安全基準設定 部43與異常判斷部44。 又、實施形態3中，與實施形態1之構成要素相同之構成Page 12 1272385 V. Description of the Invention (ίο) " Let 36 calculate the sound velocity of the gas flowing through the flow path 7 according to the equation (5). The pitch value and the sound velocity comparison command 3 7 compare the various sound velocity values previously memorized in the sound velocity memory portion 与2 with the sound velocity values calculated by the sound velocity calculation command 36. The gas type is specified by the gas type specific command 39 in accordance with the comparison result of the sound speed comparison command 37. For example, when the sound velocity c calculated by the sound velocity calculation command 36 satisfies the following expression, the gas flowing through the flow path 7 is specified as the gas b. V2 <c <V3 At this time, since the original gas A should flow through the flow path 7, and actually the gas 6 flows through the flow path 7', it is judged by the abnormality determination command 40 that "the abnormal gas flows through the flow path" Valve close command 42. As a result, the shutoff valve 32 is closed. When the gas flowing through the flow path 7 is specified as gas eight, the abnormality determination command 4 判断 judges that "the normal gas flows through the flow path 7" and the time set by the interval setting command 41 has elapsed, and the above processing is repeated. As described above, when the specific gas type of the sound velocity is calculated and a gas other than the designated gas flows, the gas can be instantaneously blocked to ensure safety. (Embodiment 3) FIG. 9 is a structure of a gas type discrimination system according to Embodiment 3 of the present invention. As shown in Fig. 9, the gas type discriminating system includes a flow path 7; the ultrasonic measuring unit 8 is disposed in the flow path 7; the calculating unit 9 calculates a signal output from the ultrasonic measuring unit 8, and the switching valve 3 2 is disposed. The switching valve 3 2 is controlled in the flow path 7 and the control unit 33. The switching valve 32 is provided downstream of the flow path 7 of the ultrasonic measuring unit 8. The slice different portion 9 further includes a security reference setting unit 43 and an abnormality determining unit 44 in addition to the elements configured as shown in Fig. 2 . Further, in the third embodiment, the same components as those of the first embodiment are configured.
第13頁 1272385 五、發明說明（11) 要素附予同一參考號碼，而省略其說明。 第1 0圖奉示由計算部9實施之處理順序。 第1 0圖中、參考號碼45表示開始命令，參考號碼46表示 音速計算命令，參考號碼47表示音速比較命令，參考號碼 49表示氣體種類特定命令，參考號碼50表示安全基準設定 命令’參考號碼5 1表不流量校正係數設.定命令’參考號碼 52表示流量算出命令，參考號碼53表示異常判斷命令，參 考號碼54表示間隔設定命令，參考號碼55表示閥關閉命 〇 安全基準設定命令50相當於安全基準設定部43(第9 圖）。 如第10圖所示、由開始命令45開始程式。由音速計算命 令46並依式（5)算出流經流路7之氣體音速。其次、由音速 比較命令47比較預先記憶在音速記憶部1 2之各種音速值與 由音速計算命令46算出之音速值。由氣體種類特定命令49 依音速比較命令47之比較結果特定氣體種類。 例如、由音速計算命令4 6算出之音速c滿足下式時，流 經流路7之氣體被特定為氣體B。 V2 <c < V3 由安全基準設定命令50，設定對應特定氣體種類之安全 基準。例如、特定之氣體種類為氣體B時，將每使用氣體B 之器具之繼續使用限制時間做為安全基準設定。 由流量校正係數設定命令5 1，設定對應特定氣體種類之 流量校正係數。用流量算出命令5 2依式（3 )算出之流速v、Page 13 1272385 V. INSTRUCTIONS (11) Elements are attached to the same reference numerals, and their descriptions are omitted. The tenth figure shows the processing procedure performed by the calculation unit 9. In Fig. 10, reference numeral 45 denotes a start command, reference numeral 46 denotes a sound speed calculation command, reference numeral 47 denotes a sound speed comparison command, reference numeral 49 denotes a gas type specific command, and reference numeral 50 denotes a safety reference setting command 'reference number 5 1 indicates that the flow rate correction coefficient is set. The reference command 'reference numeral 52 indicates the flow rate calculation command, the reference number 53 indicates the abnormality determination command, the reference number 54 indicates the interval setting command, and the reference number 55 indicates that the valve closing command safety reference setting command 50 is equivalent. Safety reference setting unit 43 (Fig. 9). As shown in Fig. 10, the program is started by the start command 45. The gas sound velocity flowing through the flow path 7 is calculated from the sound speed calculation command 46 and according to the equation (5). Next, the sound speed comparison command 47 compares the various sound speed values previously stored in the sound speed memory unit 12 with the sound speed values calculated by the sound speed calculation command 46. The gas type is specified by the gas type specific command 49 in accordance with the comparison result of the sound speed comparison command 47. For example, when the speed of sound c calculated by the sound speed calculation command 46 satisfies the following expression, the gas flowing through the flow path 7 is specified as the gas B. V2 <c < V3 Set the safety reference for the specific gas type by the safety reference setting command 50. For example, when the specific gas type is gas B, the continuous use restriction time of the appliance using the gas B is set as the safety reference. The flow correction coefficient corresponding to the specific gas type is set by the flow correction coefficient setting command 51. Using the flow rate calculation command 5 2 to calculate the flow rate v according to equation (3),
1272385 五、發明說明（12) 斷面積S與由流量校正係數設定命令5 1設定之流量校正係 數k，依式（4 )算出對應特定氣體種類之流量。 依流量算出命令52算出之流量推定使用之器具。由異常 判斷命令53判斷其器具是否滿足由安全基準設^命令μ設 定之安全基準。判斷例如其器具之繼續使用時間是否在由 安全基準設定命令50設定之繼續使用限制時間範圍内。 若其器具未滿足由安全基準設定命令5〇設定之安全基準 時，由異常判斷命令5 3判斷為「異常使用」’實施閥關閉1272385 V. INSTRUCTION DESCRIPTION (12) The sectional area S and the flow rate correction coefficient k set by the flow rate correction coefficient setting command 51 are used to calculate the flow rate corresponding to the specific gas type according to the equation (4). The device used for estimating the flow rate calculated by the flow rate calculation command 52. The abnormality determination command 53 judges whether or not the appliance satisfies the safety criterion set by the safety reference setting command μ. It is judged, for example, whether or not the continuation use time of the appliance is within the limited use time limit set by the safety reference setting command 50. If the appliance does not satisfy the safety reference set by the safety reference setting command 5, the abnormality determination command 5 3 determines that "abnormal use" is implemented.
命令55。結果、關閉開關閥32。 若其器具滿足由安全基準設定命令50設定之安全基準 時，由異常判斷命令5 3判斷為「正常使用」。由間隔設定 命令5 4設定之時間經過後，重覆實施上述處理。 、第11圖表示安全基準之一例，每器具、每氣體種類所定 繼；使用限制時間之例。此種安全基準係為嫁保氣體之安 王使用而定。第11圖所示例為決定使用氣體Α時分別對器 /、a、器具b及器具c之繼續使用限制時間，並決定使用氣 體B時分別對器具a、器具b及器具^之繼續使用限制時間。 社t以上所示、由算出音速特定氣體種類，即可適用對應 二經流路氣體種類之安全基準。因此、可確保氣體之安全 ^如、使用之氣體由都市氣體變更為丙烷氣時，自動變 子應氣體種類之安全基準。因此、可確保安全性。 又、不僅只改變氣體種類，而成分氣體改變時亦可適用 本發明。例如、煤氣中之c〇濃度改變時，由設定對應其濃Command 55. As a result, the on-off valve 32 is closed. When the appliance satisfies the safety standard set by the safety standard setting command 50, it is judged as "normal use" by the abnormality determination command 53. After the time set by the interval setting command 504 is passed, the above processing is repeated. Figure 11 shows an example of a safety standard, which is determined for each appliance and gas type; This safety benchmark is based on the use of the security gas. The example shown in Fig. 11 is a time limit for the continued use of the device/, a, the appliance b, and the appliance c when the gas is used, and the time limit for the continued use of the appliance a, the appliance b, and the appliance is determined when the gas B is used. . As shown in the above, it is possible to apply the safety standard of the gas type corresponding to the two-pass flow path by calculating the specific gas type of the sound velocity. Therefore, it is possible to ensure the safety of the gas. For example, when the gas used is changed from a city gas to a propane gas, the automatic variable should be a safety standard for the gas type. Therefore, safety can be ensured. Further, the present invention can be applied not only to changing the gas type but also when the component gas is changed. For example, when the concentration of c〇 in the gas changes, it is set to correspond to its concentration.
第15頁 1272385Page 15 1272385
五、發明說明（13) 度之安全基準，即可確保對應C0濃度改變時之安全性。 又、本發明之實施形態，主要以燃料氣之用途為例說 明，惟本發明之氣體對象並不限於此。在醫院利用各種氣 體做為醫療用，惟前述3種實施形態亦可適用。例如、可； 考慮因識別氧氣與氮而供給錯誤之氣體時，瞬間遮斷其氣 體供給等用途。又、在半導體製造領域亦利用各種氣體， 而前述3種實施形態亦可適用。 (實施形態4) 第1 2圖表示本發明之實施形態4之氣體種類判別系統構 造。 ' 如第1 2圖所示，氣體種類判別系統包含；流路7 ;超音 波測量部8，配置在流路7 ;溫度測量部5 6，配置在& ^ 7 ;計算部9，計算從超音波測量部8輸出之訊號與從溫度 測量部5 6輸出之訊號。 實施形態4中，與實施形態1之構成要素相同之構成要素 附予同一參考號碼，而省略其說明。 第1 2圖中、參考號碼8 a表示測量部。測量部8 a包含·赶 音波測量部8與溫度測量部5 6。參考號碼5 7為溫度計算 部’參考號碼5 8為比較部。參考號碼5 9表示溫度、音速記 憶部。 。 第1 3圖表示第1 2圖所不測量部8 a之構造。 第1 3圖中、參考號瑪6 0表示具有溫度測量部功能之溫产 感測器。溫度感測器6 0，配置在流路7内部超音波振動器 1 7、1 8附近。V. Inventive Note (13) The safety standard of degree can ensure the safety when the corresponding C0 concentration changes. Further, in the embodiment of the present invention, the use of the fuel gas is mainly exemplified, but the gas object of the present invention is not limited thereto. Various gases are used in hospitals for medical purposes, but the above three embodiments are also applicable. For example, when it is possible to supply an erroneous gas by recognizing oxygen and nitrogen, it is possible to instantaneously interrupt the gas supply and the like. Further, various gases are used in the field of semiconductor manufacturing, and the above three embodiments are also applicable. (Embodiment 4) Fig. 1 is a view showing the configuration of a gas type discrimination system according to Embodiment 4 of the present invention. As shown in Fig. 12, the gas type discriminating system includes; the flow path 7; the ultrasonic measuring unit 8 is disposed in the flow path 7; and the temperature measuring unit 561 is disposed in & ^ 7; the calculating unit 9 calculates the The signal output from the ultrasonic measuring unit 8 and the signal output from the temperature measuring unit 56. In the fourth embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and their description will be omitted. In Fig. 12, reference numeral 8 a denotes a measuring unit. The measuring unit 8a includes a rushing wave measuring unit 8 and a temperature measuring unit 56. Reference numeral 5 7 is a temperature calculation unit 'reference number 5 8 is a comparison unit. Reference numeral 5 9 denotes a temperature and a sonic memory. . Fig. 13 shows the structure of the non-measuring portion 8a of Fig. 12. In Fig. 3, the reference numeral 60 indicates a temperature-sensing sensor having a function of a temperature measuring unit. The temperature sensor 60 is disposed in the vicinity of the ultrasonic vibrators 1 7 and 1 8 inside the flow path 7.
第16頁 1272385 五、發明說明（14) 其次、說明氣體種類判別系統之工作、作用。 第1 2圖中、依超音波測量部8之訊號與溫度測量部5 6之 訊號，由計算部9實施計算。由音速計算部1 0算出流經流 路7之氣體音速，並由溫度計算部57算出流經流路7之氣體 溫度。由比較部5 8比較由音速計算部1 0算出之音速值與預 先記憶在溫度、音速記憶部5 9之音速值.，並由比較部5 8比 較由溫度計算部5 7算出之溫度值與預先記憶在溫度、音速 記憶部5 9之溫度值。依比較部5 8之比較結果特定氣體種 類。並由流量校正係數設定部1 4設定對應其特定氣體種類 之流量校正係數。流量計算部1 3用流量校正係數設定部1 4 設定之流量校正係數，依超音波測量部8輸出之訊號計算 流量。 依超音波測量部8之流量測量方法與實施形態1相同。 故、茲省略其說明。 第1 4圖係由第1 2圖所示計算部9實施之處理順序。 第14圖中、參考號碼61係溫度計算命令，參考號碼6 2係 溫度、音速比較命令。 溫度計算命令6 1相當於溫度計算部5 7。又、溫度、音速 比較命令6 2相當比較部5 8。 如第14圖所示、依開始命令24開始程式。由溫度計算命 令61算出流經流路7之氣體溫度。由音速計算命令25依式 (5)算出流經流路7之氣體音速。其次、由溫度、音速比較 命令62比較預先記憶在溫度、音速記憶部59之各種溫度值 與由溫度計算命令6 1算出之溫度值，並比較預先記憶在溫Page 16 1272385 V. INSTRUCTIONS (14) Next, the operation and function of the gas type discriminating system will be described. In Fig. 12, the signal from the ultrasonic measuring unit 8 and the signal from the temperature measuring unit 56 are calculated by the calculating unit 9. The gas velocity of the gas flowing through the channel 7 is calculated by the sound velocity calculating unit 10, and the temperature of the gas flowing through the channel 7 is calculated by the temperature calculating unit 57. The comparison unit 58 compares the sound velocity value calculated by the sound velocity calculation unit 10 with the sound velocity value stored in advance in the temperature and the sound velocity storage unit 59, and compares the temperature value calculated by the temperature calculation unit 57 with the comparison unit 58 and The temperature value of the temperature and the sound velocity memory unit 59 is memorized in advance. The gas species are classified according to the comparison result of the comparison portion 58. The flow rate correction coefficient setting unit 14 sets a flow rate correction coefficient corresponding to the specific gas type. The flow rate calculation unit 13 calculates the flow rate based on the signal output from the ultrasonic wave measuring unit 8 by the flow rate correction coefficient set by the flow rate correction coefficient setting unit 14. The flow rate measuring method by the ultrasonic measuring unit 8 is the same as that of the first embodiment. Therefore, the description is omitted. Fig. 14 is a processing sequence executed by the calculation unit 9 shown in Fig. 2 . In Fig. 14, reference numeral 61 is a temperature calculation command, and reference numeral 6 2 is a temperature and sound speed comparison command. The temperature calculation command 61 corresponds to the temperature calculation unit 57. Further, the temperature and the sound speed comparison command 6 2 are equivalent to the comparison unit 58. As shown in Fig. 14, the program starts with the start command 24. The temperature of the gas flowing through the flow path 7 is calculated by the temperature calculation command 61. The sound velocity of the gas flowing through the flow path 7 is calculated by the sound speed calculation command 25 according to the equation (5). Next, the temperature/sonic speed comparison command 62 compares the various temperature values previously stored in the temperature and the sonic memory unit 59 with the temperature values calculated by the temperature calculation command 61, and compares the pre-memory in the temperature.
第17頁 1272385 五 、發明說明（15) 度、音速記憶部59之各種音速值與由音速計算命令25算出 之音速值。由氣體種類特定命令2 8，依溫度、音速比較命 令62之比較結果特定氣體種類。 上由流量校正係數設定命令29，設定特定氣體種類之流量 才父正係數。用由流量算出命令30依（3)算出之流速v、斷面 積s與由流量校正係數設定命令2 9設定之流量校正係數k， 依式（4 )异出對應特定氣體種類之流量。 由間隔設定命令3丨設定之時間經過後重覆上述處理。在 此處理中、若氣體種類變更，即算出對應其變更氣體種類 之流量。 立第15圖表示氣體種類與溫度與音速之關係。氣體中、僅 二，並無法特定氣體種類，惟有由於組合溫度與音速可特 =氣體，類者。例如、第15圖所示氣體A及氣體B，由算出 /凰度與曰速得以明確區別。如第1 5圖所示氣體種類與、、㈤ Π速，例如、#以式或表之形式保持。本實 ^中 μ關係記憶於溫度、音速記憶部5 9。 例如、由溫度計算命令61算出之溫度Τ與由音速 I上I 日速c滿足下式時，流經流路7之氣體即被牯中 為氣體A。 丨做W疋 T 二 T1 c = Y2 如以上所示、由於用溫度、音速，即使 氣體亦可特定氣體種類。 軏近之 (實施形態5) 第18頁 1272385 五、發明說明（16) 第1 6圖係本發明之實施形態5之氣體種類判別系統構 造。 如第1 6圖所示，氣體種類判別系統包含；流路7 ;超音 波測量部8，配置在流路7 ;溫度測量部6 4，配置在流路 7 ;計算部9，計算從超音波測量部8輸出之訊號與從溫度 測量部64輸出之訊號·，開關閥3 2，配置在流路7 ;及控制 部3 3，控制開關閥3 2。開關閥3 2設在超音波測量部8至流 路7下游。 本實施形態5中，與實施形態2之構成要素相同之構成要 素附予同一參考號碼，而省略其說明。 第16圖中、參考號碼8b表示測量部。測量部8b包含：超 音波測量部8與溫度測量部6 4。參考號碼6 5為溫度計算 部，參考號碼6 6為比較部，參考號碼6 7表示溫度、音速記 憶部，參考號碼7 〇表示異常判斷部。 測量部8 b之構造與第1 3圖所示測量部8 a之構造相同。 第1 7圖表示由第1 6圖所示計算部9實施之處理順序。 茲假定原來氣體A應流經流路7，而實際上氣體b流經流 路7 〇 如第1 7圖所示、由開始命令7 1開始程式。由溫度計算命 令72算出流經流路7之氣體溫度。並由音速計算命令73依 式（5 )算出流經流路7之氣體音速。其次、由溫度、音速比 較 <卩令7 4比較預先5己憶在溫度、音速記憶部6 7之各種溫度 值與由溫度計算命令72算出之溫度值，並比較預先記憶在 溫度、音速記憶部67之各種音速值與由音速計算命令73算Page 17 1272385 V. Inventive Description (15) The various sound velocity values of the degree and sound velocity memory unit 59 and the sound velocity values calculated by the sound velocity calculation command 25. The specific gas type is determined by the comparison of the temperature and the speed of sound comparison command 62 by the gas type specific command 2 8. The flow correction coefficient setting command 29 is used to set the flow rate of the specific gas type to the parent positive coefficient. The flow rate v, the cross-sectional area s calculated by the flow rate calculation command 30 and the flow rate correction coefficient k set by the flow rate correction coefficient setting command 29 are different from the flow rate of the specific gas type according to the equation (4). The above processing is repeated after the time set by the interval setting command 3丨. In this process, if the gas type is changed, the flow rate corresponding to the changed gas type is calculated. Figure 15 shows the relationship between gas type and temperature and speed of sound. In the gas, only two, and can not specify the gas type, only because the combined temperature and speed of sound can be special = gas, such as. For example, the gas A and the gas B shown in Fig. 15 are clearly distinguished from the calculation/diameter and the idle speed. As shown in Figure 15, the gas type and , (5) idle speed, for example, # is maintained in the form of a formula or a table. In this case, the μ relationship is stored in the temperature and sonic memory unit. For example, when the temperature 算出 calculated by the temperature calculation command 61 satisfies the following expression by the I-speed c on the sound velocity I, the gas flowing through the flow path 7 is the gas A.丨Do W疋 T 2 T1 c = Y2 As shown above, due to temperature and speed of sound, even gas can be used for specific gas types. (Embodiment 5) Page 18 1272385 V. Description of Invention (16) Fig. 16 is a configuration of a gas type discrimination system according to a fifth embodiment of the present invention. As shown in Fig. 16, the gas type discriminating system includes a flow path 7; the ultrasonic measuring unit 8 is disposed in the flow path 7, the temperature measuring unit 64 is disposed in the flow path 7, and the calculating unit 9 calculates the ultrasonic wave. The signal output from the measuring unit 8 and the signal output from the temperature measuring unit 64, the switching valve 32 are disposed in the flow path 7 and the control unit 33, and the switching valve 3 2 is controlled. The on-off valve 3 2 is provided downstream of the ultrasonic measuring unit 8 to the flow path 7. In the fifth embodiment, the same components as those in the second embodiment are denoted by the same reference numerals, and their description will be omitted. In Fig. 16, reference numeral 8b denotes a measuring unit. The measuring unit 8b includes an ultrasonic measuring unit 8 and a temperature measuring unit 64. Reference numeral 65 is a temperature calculation unit, reference numeral 66 is a comparison unit, reference numeral 6 7 is a temperature and a sound speed memory unit, and reference numeral 7 〇 is an abnormality determination unit. The structure of the measuring unit 8b is the same as that of the measuring unit 8a shown in Fig. 3 . Fig. 17 shows the processing procedure performed by the calculation unit 9 shown in Fig. 16. It is assumed that the original gas A should flow through the flow path 7, and actually the gas b flows through the flow path 7 〇 as shown in Fig. 17, starting from the start command 7 1 . The temperature of the gas flowing through the flow path 7 is calculated by the temperature calculation command 72. The sound velocity of the gas flowing through the flow path 7 is calculated by the sound speed calculation command 73 according to the equation (5). Next, the temperature and the speed of sound comparison < 卩 7 7 4 compare the temperature values of the temperature, the sound speed memory unit 67 and the temperature value calculated by the temperature calculation command 72, and compare the memory in the temperature and the sound speed. The various sound speed values of the portion 67 are calculated by the sound speed calculation command 73
第19頁Page 19
1272385 五、發明說明（17) 出之音速值。由氣體種類特定命令76依溫度、音速比較命 令7 4之比_結果特定氣體種類。 例如、由温度計算命令72算出之溫度T與音速計算命令 7 3算出之音速c滿足下式時，從第1 5圖、流經流路7之氣體 被特定為氣體B。 T = T2 c = V2 此時、因原來氣體A應流經流路7，而實際上氣體B流經 流路7，故由異常判斷命令7 7判斷「有異常氣體流經流路 7」，實施閥關閉命令79。其結果關閉關閉閥32。 一流經流路7之氣體被特定為氣體a時，由異常判斷命令 判斷「有正常氣體流經流路7」。由間隔設定命令7 8設定 之時間經過後，重覆實施上述處理。 "X上所示、由於用溫度、音速，即使對音速值較近之 氣體亦可特定氣體種類，而指定氣體以外之氣體流動時， 可瞬時遮斷氣體確保安全。 (實施形態6 ) 第1 8圖係本♦明之奋始 、生。 七月之μ施形態6之氣體種類判別系統構 如第18圖所示，n體錄 波測量部8，配置在二種7類判：糸統包含；流路7 ·，超音 7 .呼管邱q己置在机路7，溫度測量部80，配置在流路 測量部：輸出超2測量部8輸出之訊號與從溫度 部33，$制π H/號，開關閥32，配置在流路7 ;及控制 控制開關閥32。開關閥32設在超音波測量部8至流 1272385 五、發明說明（18) 路7下游。 本實施形態6中，與實施形態3之構成要素相同之構成要 素附予同一參考號碼，而省略其說明。 本實施形態6中，與實施形態3之構成要素相同之構成要 素附予同一參考號碼，而省略其說明。 第1 8圖中、參考號碼8 c表示測量部。.測量部8 c包含：超 音波測量部8與溫度測量部80。參考號碼81為溫度計算 部，參考號碼8 2為比較部，參考號碼8 3表示溫度、音速記 憶部’參考號碼84安全基準設定部，參考號碼85表示異常 判斷部。 測量部8 c之構造與第1 3圖所示測量部8 a之構造相同。 第1 9圖表示由第丨8圖所示計算部9實施之處理順序。 如，19圖所示、由開始命令88開始程式。由溫度計算命 令89算^出流經流路7之氣體溫度。並由音速計算命令9〇依 式算出流經流路7之氣體音速。其次、由溫度、音速比 車印7 9 1比較預先δ己憶在溫度、音速記憶部μ之各種溫度 Ϊ ί由ΐ度計算命令89算出之溫度值，並比較預先記憶在 :又立、日速记憶部8 3之各種音速值與由音速計算命令9 0算 八01曰速值。由氣體種類特定命令93依溫度、音速比較命 々9 1之比較結果特定氣體種類。 ί溫度計算命令89算出之溫度了與音速計算命令 # = a ^^速c滿足下式時，從第1 5圖、流經流路7之氣體 被特疋為氣體B。 T = T21272385 V. Description of invention (17) Sound velocity value. The gas type specific command 76 compares the ratio of the command 7 4 to the temperature and the speed of sound. For example, when the temperature T calculated by the temperature calculation command 72 and the sound speed c calculated by the sound speed calculation command 73 satisfy the following expression, the gas flowing through the flow path 7 from the fifth figure is specified as the gas B. T = T2 c = V2 At this time, since the original gas A should flow through the flow path 7, and actually the gas B flows through the flow path 7, it is judged by the abnormality determination command 7 7 that "the abnormal gas flows through the flow path 7". A valve close command 79 is implemented. As a result, the shutoff valve 32 is closed. When the gas of the first-class flow path 7 is specified as the gas a, it is judged by the abnormality judgment command that "the normal gas flows through the flow path 7". After the elapse of the time set by the interval setting command 78, the above processing is repeated. According to the temperature and the speed of sound, even if the gas with a sound velocity is close to a specific gas type, and the gas other than the specified gas flows, the gas can be instantaneously blocked to ensure safety. (Embodiment 6) The 18th figure is the beginning of life and life. As shown in Fig. 18, the n-body recording measurement unit 8 is arranged in two types of seven types of judgments: the system includes: the flow path 7 ·, the super sound 7 . Guan Qiq is placed in the machine path 7, and the temperature measuring unit 80 is disposed in the flow path measuring unit: the signal output from the super 2 measuring unit 8 and the slave temperature unit 33, $π H/number, and the on-off valve 32 are disposed. The flow path 7; and the control control switch valve 32. The on-off valve 32 is provided downstream of the ultrasonic measuring unit 8 to the flow 1272385. In the sixth embodiment, the same components as those in the third embodiment are denoted by the same reference numerals, and the description thereof will be omitted. In the sixth embodiment, the same components as those in the third embodiment are denoted by the same reference numerals, and the description thereof will be omitted. In Fig. 18, reference numeral 8c denotes a measuring unit. The measuring unit 8c includes an ultrasonic measuring unit 8 and a temperature measuring unit 80. Reference numeral 81 is a temperature calculation unit, reference numeral 8 2 is a comparison unit, reference numeral 83 represents a temperature, a sound speed memory unit 'reference number 84 safety reference setting unit, and reference numeral 85 indicates an abnormality determination unit. The structure of the measuring unit 8c is the same as that of the measuring unit 8a shown in Fig. 3 . Fig. 19 shows the processing procedure performed by the calculation unit 9 shown in Fig. 8. For example, as shown in Fig. 19, the program is started by the start command 88. The temperature of the gas flowing through the flow path 7 is calculated by the temperature calculation command 89. The gas velocity of the gas flowing through the flow path 7 is calculated by the sound velocity calculation command 9〇. Secondly, the temperature and the speed of sound are compared with the printing speed of the vehicle. The temperature value of the temperature, the speed of the memory part μ is calculated by the temperature calculation command 89, and the comparison is pre-recorded in: The various sound speed values of the speed memory unit 8 3 are compared with the eight speed idle values by the sound speed calculation command 90. The gas type specific command 93 compares the temperature and the speed of sound to determine the specific gas type. When the temperature calculated by the temperature calculation command 89 and the sound speed calculation command # = a ^ speed c satisfy the following formula, the gas flowing through the flow path 7 from the fifth figure is specifically referred to as the gas B. T = T2
第21頁 1272385 五、發明說明（19) c = V2 由安全基準設定命令9 4，設定對應特定氣體種類之安全 基準。例如、特定之氣體種類為氣體B時，將每使用氣體B 之器具之繼續使用限制時間做為安全基準設定。 由流量校正係數設定命令95，設定對應特定氣體種類之 流量校正係數。用流量算出命令96依式（3)算出之流速v、 斷面積S與由流量校正係數設定命令9 5設定之流量校正係 數k，依式（4 )算出對應特定氣體種類之流量。 依流量算出命令96算出之流量推定使用之器具。由異常 判斷命令97判斷其器具是否滿足由安全基準設定命令9 4設 定之安全基準。判斷例如其器具之繼續使用時間是否在由 安全基準設定命令94設定之繼續使用限制時間範圍内。 若其器具未滿足由安全基準設定命令94設定之安全基準 時，由異常判斷命令97判斷為「異常使用」，實施閥關閉 命令99。結果、關閉開關閥32。 若其器具滿足由安全基準設定命令94設定之安全基準 時，由異常判斷命令9 7判斷為「正常使用」。由間隔設定 命令9 8設定之時間經過後，重覆實施上述處理。 如以上所示、由於用溫度、音速，即使對音速值較近之 氣體亦可特定氣體種類，而可適用對應流經流路之氣體種 類之安全基準。因此、可確保安全。 (實施形態7 ) 以下、說明本發明之實施形態7之氣體種類判別系統。 實施形態7之氣體種類判別系統之構造與實施形態4之氣體Page 21 1272385 V. INSTRUCTIONS (19) c = V2 The safety reference setting command 9 4 sets the safety reference for the specific gas type. For example, when the specific gas type is gas B, the continuous use restriction time of the appliance using the gas B is set as the safety reference. The flow rate correction coefficient corresponding to the specific gas type is set by the flow rate correction coefficient setting command 95. The flow rate v and the sectional area S calculated by the flow rate calculation command 96 according to the equation (3) and the flow rate correction coefficient k set by the flow rate correction coefficient setting command 9.5 are used to calculate the flow rate corresponding to the specific gas type according to the equation (4). The device used for estimating the flow rate calculated by the flow rate calculation command 96. The abnormality determination command 97 judges whether or not the appliance satisfies the safety criterion set by the safety reference setting command 94. It is judged, for example, whether or not the continuation use time of the appliance is within the limited use time limit set by the safety reference setting command 94. If the appliance does not satisfy the safety criterion set by the safety reference setting command 94, the abnormality determination command 97 determines "abnormal use" and the valve close command 99 is executed. As a result, the on-off valve 32 is closed. When the appliance satisfies the safety criterion set by the safety reference setting command 94, it is judged as "normal use" by the abnormality determination command 97. After the time set by the interval setting command 98 is passed, the above processing is repeated. As described above, since the temperature and the speed of sound can be used for a gas having a sound velocity value close to a specific gas type, a safety standard corresponding to the type of gas flowing through the flow path can be applied. Therefore, it is safe. (Embodiment 7) Hereinafter, a gas type discrimination system according to Embodiment 7 of the present invention will be described. The structure of the gas type discriminating system of the seventh embodiment and the gas of the fourth embodiment
第22頁 1272385 五、發明說明（20) 種類判別系統之構造相同。故茲省略其說明。 第2 0圖表示由實施形態7之氣體種類判別系統之計算部 實施之處理順序。 如第2 0圖所示、由開始命令1 〇 〇開始程式。由苐1次溫度 計算命令101算出流經流路7之氣體溫度T1。由第1次音速 計算命令1 〇 2算出流經流路7之氣體音速.。由第2次溫度計 算命令1 04算出流經流路7之氣體溫度T2。 由比較命令105判定溫度T1與溫度T2之差ΔΤ是否大於預 定之溫度T p。若差ΔΤ為預定之溫度T p以下時，由間隔 設定命令1 0 3設定之時間經過後繼續處理。若差△ T大於預 定之溫度T p時，由第2次音速計算命令106算出流經流路7 之氣體音速。 如此、算出2對溫度值、音速值。 由溫度、音速比較命令1 0 7比較預先記憶在溫度、音速 記憶部5 9之各種溫度值與算出之2溫度值，並比較記憶在 溫度、音速記憶部59之各種音速值與算出之2音速值。由 氣體種類特定命令1 0 9依溫度、音速比較命令1 0 7之比較結 果特定氣體種類。 由流量校正係數設定命令11 0，設定對應特定氣體種類 之流量校正係數。用流量算出命令1 1 1依式（3 )算出之流速 v、斷面積S與由流量校正係數設定命令1 1 0設定之流量校 正係數k，依式（4)算出對應特定氣體種類之流量。 由間隔設定命令11 2設定之時間經過後重覆上述處理。 在此處理中、若氣體種類變更，即算出對應其變更氣體種Page 22 1272385 V. INSTRUCTIONS (20) The type discrimination system has the same structure. Therefore, the description is omitted. Fig. 20 is a view showing the processing procedure carried out by the calculation unit of the gas type discrimination system of the seventh embodiment. As shown in Figure 20, the program starts with the start command 1 〇 。. The gas temperature T1 flowing through the flow path 7 is calculated from the primary temperature calculation command 101. The gas sound velocity flowing through the flow path 7 is calculated from the first sound speed calculation command 1 〇 2 . The gas temperature T2 flowing through the flow path 7 is calculated from the second thermometer calculation command 104. It is determined by the comparison command 105 whether or not the difference ΔΤ between the temperature T1 and the temperature T2 is greater than a predetermined temperature T p . When the difference ΔΤ is equal to or lower than the predetermined temperature T p , the processing is continued after the time set by the interval setting command 1 0 3 has elapsed. When the difference ΔT is larger than the predetermined temperature Tp, the gas velocity of the gas flowing through the flow path 7 is calculated by the second sound speed calculation command 106. In this way, two pairs of temperature values and sound speed values are calculated. The temperature and the sound speed comparison command 1 0 7 compare the various temperature values previously stored in the temperature and the sound velocity storage unit 59 with the calculated temperature values, and compare the various sound speed values stored in the temperature and the sound velocity storage unit 59 with the calculated 2 sound speeds. value. The specific gas type is determined by the comparison of the gas type specific command 1 0 9 by the temperature and the speed of sound comparison command 1 0 7 . The flow correction coefficient corresponding to the specific gas type is set by the flow correction coefficient setting command 110. The flow rate calculation command 1 1 1 calculates the flow rate v according to the equation (3), the cross-sectional area S, and the flow rate correction coefficient k set by the flow rate correction coefficient setting command 1 1 0, and calculates the flow rate corresponding to the specific gas type according to the equation (4). The above processing is repeated after the time set by the interval setting command 11 2 has elapsed. In this process, if the gas type is changed, the corresponding gas species are calculated.
第23頁 !272385 五、發明說明（21) 一 --- 類之流量。 第2 1圖表示氣體種類與溫度與音速之關係。由算出溫度 ^之音速值與溫度口之音速值，得以明確區別氣體A與氣X β。如第2 1圖所示氣體種類與溫度與音速之關係，例 U以ί或表之形式保持。本實施形態、此關係被記憶 在▲度、音速記憶部5 9。 值戶f不、由於用2對溫度值、音速值，即使對音速 才田接近之氣體亦可特定氣體種類。 (實施形態8 ) 每二I二Γ明本發明之實施形態8之氣體種類判別系統。 :二％之缔氣體f類判別系統之構造與實施形態5之氣體 別系統之構造相同。故茲省略立說明。 對態8二氣體種類判別系統，用實施形態7說明之2 二：度值、音速值特定氣體種類，判定是否有異常氣體流 施之處Ξ )Ϊ ;:施形悲8之乱體種類判別系統由計算部實 如第22圖所示、從開始命令1〇〇 之處理順序與第20圖所示處：體種類特定命令m 明。 斤相同。故茲省略其說 兹假定原來氣體A應流經流路7， 奋 路7，由氣體種類特定命令i 〇9特〜Λ牙、上氣體B流經流 體β。 机經流路7之氣體為氣 此時、由異常判斷命令113判斷「 机路7有異常氣體流Page 23 !272385 V. Invention Description (21) One --- Class flow. Figure 21 shows the relationship between gas type and temperature and speed of sound. From the calculation of the sound velocity value of the temperature ^ and the sound velocity value of the temperature port, the gas A and the gas X β are clearly distinguished. As shown in Figure 2, the gas type is related to the temperature and the speed of sound. Example U is maintained in the form of ί or a table. In the present embodiment, the relationship is stored in the ▲ degree and sound velocity storage unit 59. The value of the household f is not. Since two pairs of temperature values and sonic speed values are used, even a gas that is close to the speed of sound can be a specific gas type. (Embodiment 8) A gas type discrimination system according to Embodiment 8 of the present invention will be described. The structure of the two-numbered gas f-class discrimination system is the same as that of the gas system of the fifth embodiment. Therefore, the explanation is omitted. In the state 8 gas type discriminating system, it is determined by the second gas value and the sound velocity value specific gas type described in the seventh embodiment whether or not there is an abnormal gas flow application Ξ) :; The calculation system is as shown in Fig. 22, and the processing sequence from the start command 1 is the same as the body type specific command m shown in Fig. 20. The pound is the same. Therefore, it is assumed that the original gas A should flow through the flow path 7, and the end of the gas, the specific order of the gas type i 〇 9 Λ Λ Λ 、, the upper gas B flows through the flow β. The gas passing through the flow path 7 is gas. At this time, it is judged by the abnormality determination command 113 that "the abnormality of the gas flow in the machine path 7"
第24頁 £72385 $、發明购（22) 動J ，實施閥關閉命令1 1 4。結果、關閉開關閥3 2。 特定流經流路7之氣體為氣體人時，由異常判斷命令113 判斷「流路7有正常氣體流動」。由間隔設定命令112設定 之時間經過後，重覆實施上述處理。 如以上所示、由於用2對溫度值、音速值，即使對音速 f相當接近之氣體亦可特定氣體種類，而有指定氣體以外 氣體流動時可瞬時遮斷氣體確保安全。 (實施形態9 ) 以下、說明本發明之實施形態9之氣體種類判別系統。 實施形態9之氣體種類判別系統之構造與實施形態6之氣體 種類判別系統之構造相同。故茲省略其說明。 實施形態9之氣體種類判別系統，用實施形態7說明之2 對溫度值、音速值特定氣體種類，判定是否滿足對應特定 氣體種類之安全基準。 第2 3圖表示實施形態9之氣體種類判別系統由計算部實 施之處理順序。 如第23圖所示、從開始命令1〇〇至氣體種類特定命令1〇9 之處理順序與第2 0圖所示處理順序相同。故茲省略其說 明。 女全基準設定命令11 5以下之處理，與實施形態6說明之 處理相同。 如以上所示、由於用2對溫度值、音速值，即使對音速 值相當接近之氣體亦可特定氣體種類，而可適 & 流路之氣體種類之安全基準。因此、可確保；： = 第25頁 1272385 五、發明說明（23) 用。 又、上述所有實施形態，已知氣體種類與溫度，亦可合 併實施氣體流量之溫度校正。尤其如實施形態1，預先已 知氣體種類之選擇範圍，當特定氣體種類而無需溫度時， 因可從音速推定溫度，故無需用溫度感測器即可校正溫 度。 又、由於更附加壓力感測器，亦可測量質量流量。 [產業上之可利用性] 依本發明之氣體種類判別系統，可自動特定流經流路之 氣體種類，並設定對應特定氣體種類之流量校正係數。因 此、具有能構成對應氣體種類之系統或機器之效果。 又依本發明之其他氣體種類判別系統，可自動特定氣體 種類，並依特定之氣體種類控制配置在流路之開關閥。因 此、具有流經流路之氣體種類改變時，可防止使用系統或 機器之不安全狀況之發生之效果。 又依本發明之其他氣體種類判別系統，可自動特定氣體 種類，並設定對應特定氣體種類之安全基準。因此、具有 流經流路之氣體種類改變時，可防止使用系統或機器之不 安全狀況之發生之效果。 又依本發明之其他氣體種類判別系統，可用溫度值與音 速值自動特定氣體種類。因此、具有對音速值比較接近之 氣體亦能特定氣體種類之效果。 、又依本發明之其他氣體種類判別系統，可用溫度值與音 速值自動特定氣體種類。因此、具有對音速值比較接近之Page 24 £72385 $, invention purchase (22) move J, implement valve close command 1 1 4. As a result, the on-off valve 3 2 is closed. When the gas flowing through the flow path 7 is a gas person, the abnormality determination command 113 determines that "the flow path 7 has a normal gas flow". After the elapse of the time set by the interval setting command 112, the above processing is repeated. As shown above, since two pairs of temperature values and sound velocity values are used, even a gas that is relatively close to the speed of sound f can be specified as a gas type, and when a gas other than the specified gas flows, the gas can be instantaneously blocked to ensure safety. (Embodiment 9) Hereinafter, a gas type discrimination system according to Embodiment 9 of the present invention will be described. The structure of the gas type discriminating system of the ninth embodiment is the same as the structure of the gas type discriminating system of the sixth embodiment. Therefore, the description is omitted. In the gas type discriminating system of the ninth embodiment, the temperature value and the sound velocity value specific gas type are determined by the second embodiment, and it is determined whether or not the safety standard corresponding to the specific gas type is satisfied. Fig. 2 is a view showing the processing procedure performed by the calculation unit in the gas type discrimination system of the ninth embodiment. As shown in Fig. 23, the processing sequence from the start command 1〇〇 to the gas type specific command 1〇9 is the same as the processing sequence shown in Fig. 20. Therefore, the description is omitted. The processing of the female all-standard setting command 11 5 or less is the same as the processing described in the sixth embodiment. As shown above, since two pairs of temperature values and sound velocity values are used, even a gas having a sound velocity value that is relatively close to a gas can be used as a safety standard for the gas type of the flow path. Therefore, it can be ensured;: = Page 25 1272385 V. Description of invention (23). Further, in all of the above embodiments, the gas type and the temperature are known, and the temperature correction of the gas flow rate may be performed in combination. In particular, as in the first embodiment, the selection range of the gas type is known in advance, and when the temperature is not required for the specific gas type, since the temperature can be estimated from the sound velocity, the temperature can be corrected without using a temperature sensor. Moreover, the mass flow rate can also be measured due to the additional pressure sensor. [Industrial Applicability] According to the gas type discriminating system of the present invention, the type of gas flowing through the flow path can be automatically specified, and the flow rate correction coefficient corresponding to the specific gas type can be set. Therefore, it has the effect of a system or machine that can constitute a corresponding gas type. According to the other gas type discriminating system of the present invention, the gas type can be automatically specified, and the on-off valve disposed in the flow path can be controlled according to the specific gas type. Therefore, when the type of gas flowing through the flow path is changed, the effect of the unsafe condition of the system or the machine can be prevented. According to the other gas type discriminating system of the present invention, the gas type can be automatically specified and a safety standard corresponding to the specific gas type can be set. Therefore, when the type of gas flowing through the flow path is changed, the effect of the occurrence of an unsafe condition of the system or the machine can be prevented. Further, according to the other gas type discriminating system of the present invention, the gas value can be automatically specified by the temperature value and the sound speed value. Therefore, it is possible to have a specific gas type for a gas having a relatively close sound velocity value. According to the other gas type discriminating system of the present invention, the gas value can be automatically specified by the temperature value and the sound speed value. Therefore, it has a close proximity to the speed of sound.
第26頁 1272385 五、發明說明（24) "—" " 氣體亦能特定氣體種類，有指定氣體以外氣體流動時，可 瞬一時遮斷氣體。結杲、具有可確保氣體安全使用之效果。 又依本發明之其他氣體種類判別系統， ，值自動特定氣體種類。因此、具有對音速值比 2體亦犯特疋氣體種類，可適用對應流經流路氣體種類之 文全基準。結果、具有可確保氣體安全使用之效果。 ” ^發明之其他氣判別系統，可用2對溫度 接i頰。因此、具有對音速值相當 接k之乳體亦能特定氣體種類之效果。 又依本發明之其他廣體錄 值、音速值自動特定氣體種』判別系統，可用2對溫度 之氣體亦能特定氣體種類，、對音，值相當接近 可瞬時遮斷氣體。姓果、且9疋氣體以外氣體流動時， 果。 、" ^有可確保氣體安全使用之效 又依本發明之其他氣體種 值、音速值自動特定氣體種別系統，可用2對溫度 之氣體亦能特定氣體種類，二因此、對音速值相當接近 之安全基準。結果、具 適用對應流經流路氣體種類 圖式之簡單說明：八 可確保氣體安全使用之效果。 第1圖係先前之音速故障診 塊圖 第2圖係本發明之實施彤 糸統構造方塊圖。 圖。 〜 < 氣體種類判別糸統構造方 圖 第3圖係氣體種類判別系統之超音波測量部之構造方塊Page 26 1272385 V. INSTRUCTIONS (24) "-"" Gas can also be a specific gas type. When a gas other than the specified gas flows, the gas can be interrupted instantaneously. It has a crusting effect and ensures the safe use of gas. According to another gas type discriminating system of the present invention, the value is automatically determined by the specific gas type. Therefore, it is possible to use a specific gas type for the sound velocity value ratio 2 body, and it is possible to apply the full reference standard corresponding to the flow path gas type. As a result, it has the effect of ensuring safe use of the gas. ^Invented other gas discriminating systems, which can be used to connect the cheeks with two pairs of temperatures. Therefore, the effect of the specific gas type can be obtained for the milk body with the sonic velocity value corresponding to k. According to the other wide-area recording and sound velocity values of the present invention. For the automatic gas-specific gas discriminating system, it is possible to use a gas of two pairs of temperatures to specify a gas type, and the sound is relatively close to the gas that can be instantaneously blocked. If the gas is flowing outside the gas of 9 疋, the result is . ^There are other specific gas species systems that can ensure the safe use of gases and other gas species and sound velocity values according to the present invention. It is also possible to use specific gas species for two pairs of temperature gases. Therefore, the safety reference for sound velocity values is relatively close. The result is a simple description of the corresponding flow pattern of the flow path gas: eight can ensure the effect of safe use of the gas. Fig. 1 is the previous sound velocity fault diagnosis block diagram 2 is the implementation of the present invention Fig. 3 < Gas type discrimination system structure diagram Fig. 3 is a construction block of the ultrasonic measurement unit of the gas type discrimination system
1272385 五、發明說明（25) 第4圖係由氣體種類判別系統之 流程圖 叶异部實施之處理順序 第5圖係氣體種類與音速關 、 第6圖係氣體種類與汸旦曲線圖。 以里仅正信 第7圖係本發明之實施形態2之^關係之曲線圖。 塊圖。 〜氣體種類判別系統構造方 第8圖係由氣體種類判別系 流程圖。 、、’之計算部實施之處理順序 第9圖係本發明之實施形態3 a 、 塊圖。 ^ 氣體種類判別系統構造方 第10圖係由氣體種類判 流程圖。 、統之計算部f + 开丨I轭之處理順序 第11圖係氣體器具與繼續使用 第1 2圖係本發明之實施形態：制時間關係之曲線圖。 方塊圖。 “氣體種類判別系統構造 第13圖係氣體種_心、統 〜 第1 4圖係由氣體種類 ’、]里。Μ冓造方塊圖。 流程圖。 ，、統之計算部實施之處理順序 第1 5圖係氣體種類與溫度盥立 第16圖係本發明之實施曰速關係之曲線圖。 方塊圖。 ^之氣體種類判別系統構造 第1 7圖係由氣體種類判 流程圖。 糸統之計算部實施之處理順序 第1 8圖係本發明之實施形 ^ · 〜之氣體種類判別系統構造1272385 V. INSTRUCTIONS (25) Fig. 4 is a flow chart of the gas type discriminating system. The processing sequence of the leaf heterogeneous implementation Fig. 5 is the gas type and the sound speed off, and the sixth graph is the gas type and the dark curve. Here, only the letter 7 is a graph of the relationship of the second embodiment of the present invention. Block diagram. ~ Gas type discrimination system construction method Fig. 8 is a flow chart of gas type discrimination system. Processing sequence of calculation by the calculation unit of Fig. 9 is a block diagram of an embodiment 3 a and a block diagram of the present invention. ^ Gas type discriminating system constructor Figure 10 is a flow chart for determining the gas type. Processing sequence of the calculation unit f + opening I yoke Fig. 11 is a gas appliance and continued use. Fig. 2 is a graph showing the relationship between the time and the production of the present invention. Block diagram. "Gas type discriminating system structure Fig. 13 is a gas species _ heart, system ~ Figure 14 is from the gas type ',]. 方块 方块 。 。 。 流程图 流程图 流程图 流程图 流程图 流程图 流程图 流程图 流程图 流程图 流程图 流程图 流程图 流程图 流程图 流程图 流程图 流程图 流程图 计算 计算 计算 计算 计算Fig. 5 is a graph showing the relationship between the gas type and the temperature. Fig. 16 is a graph showing the relationship between the idling speed of the present invention. Fig. 1 is a gas flow type discriminating system structure. Fig. 7 is a flow chart for determining the gas type. Process sequence performed by the calculation unit Fig. 18 is a gas type discrimination system structure of the embodiment of the present invention
第28頁 1272385 五、發明說明（26) 方塊圖。 第1 9圖係由氣體種類判別系統之計算部實施之處理順序 流程圖。 第2 0圖係由本發明之實施形態7之氣體種類判別系統之 計算部實施之處理順序流程圖。 第2 1圖係氣體種類與溫度與音速關係.之曲線圖。 第2 2圖係由本發明之實施形態8之氣體種類判別系統之 計算部實施之處理順序流程圖。 第2 3圖係由本發明之實施形態9之氣體種類判別系統之 計算部實施之處理順序流程圖。 圖號說明： 1 · · ·超音波測量部 2、5、10· · ·音速計算部 3 · · ·音速設定部 4、5 6、6 4、8 0 · · ·溫度測量部 6、11、58、66、82· · •比較部 8 · · ·超音波測量部 9···計算部 12 · · ·音速記憶部 13 · · ·流量計算部 1 4 ···流量校正係數設定部 17、18· ··超音波振動器 19 · · ·發送部 2 0 · · ·接收部Page 28 1272385 V. Description of the invention (26) Block diagram. Fig. 19 is a flow chart showing the processing sequence implemented by the calculation unit of the gas type discrimination system. Fig. 20 is a flow chart showing the processing procedure carried out by the calculation unit of the gas type discrimination system according to the seventh embodiment of the present invention. Figure 21 is a graph of the relationship between gas type and temperature and sound velocity. Fig. 2 is a flow chart showing the processing procedure carried out by the calculation unit of the gas type discrimination system according to the eighth embodiment of the present invention. Fig. 2 is a flow chart showing the processing procedure carried out by the calculation unit of the gas type discrimination system according to the ninth embodiment of the present invention. Description of the drawings: 1 · · Ultrasonic measuring unit 2, 5, 10 · · Sound speed calculating unit 3 · · Sound speed setting unit 4, 5 6 , 6 4, 8 0 · · Temperature measuring units 6, 11, 58, 66, 82 · · Comparison unit 8 · · Ultrasonic measurement unit 9 · · Calculation unit 12 · · Sound flow memory unit 13 · · Flow rate calculation unit 1 4 ··· Flow correction coefficient setting unit 17 18···Supersonic vibrator 19 · · · Transmitting unit 2 0 · · · Receiving unit
第29頁 1272385 五、發明說明（27) 2 1 · · ·轉換部 2 2 · · ·轉換控制部 2 3 · · ·計時部 32 · · ·開關閥 3 3 · · ·控制部 34、44、70、85 · ••異常判斷部 43、84 · ••安全基準設定部 56、57、65、81· ••溫度計算部 5 9、6 7、8 3 · ••溫度、音速記憶部Page 29 1272385 V. INSTRUCTION OF THE INVENTION (27) 2 1 · · Conversion unit 2 2 · · · Conversion control unit 2 3 · · · Timing unit 32 · · · On/off valve 3 3 · · Control unit 34, 44 70, 85 • • • abnormality determination unit 43 and 84 • • • Safety reference setting unit 56, 57, 65, 81 • • Temperature calculation unit 5 9 , 6 7 , 8 3 • • • Temperature and speed memory unit
Claims (1)
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| US (1) | US6691582B1 (en) |
| JP (1) | JP3638252B2 (en) |
| KR (1) | KR20010090727A (en) |
| CN (2) | CN100392361C (en) |
| MY (1) | MY121845A (en) |
| TW (1) | TWI272385B (en) |
| WO (1) | WO2000016090A1 (en) |
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| JP5194754B2 (en) * | 2007-12-10 | 2013-05-08 | パナソニック株式会社 | Gas meter device and gas supply system using this device |
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- 1999-09-10 KR KR1020017003185A patent/KR20010090727A/en active Search and Examination
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| CN1721824A (en) | 2006-01-18 |
| CN100397073C (en) | 2008-06-25 |
| MY121845A (en) | 2006-02-28 |
| JP3638252B2 (en) | 2005-04-13 |
| US6691582B1 (en) | 2004-02-17 |
| CN100392361C (en) | 2008-06-04 |
| WO2000016090A1 (en) | 2000-03-23 |
| KR20010090727A (en) | 2001-10-19 |
| CN1319185A (en) | 2001-10-24 |
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